Question

calculate mass of 3.011×10 no of nitrogen atoms

Answer 1

Given number of nitrogen atoms = 3.011 X 1023

Number of moles = Number of particles / Avogadro number

= 3.011 X 1023 / 6.023*1023

= 0.5 moles

So, Mass = moles * molar mass

= 0.5 * 14

= 7g

So, 7g is the mass of 3.011 X 1023 number of nitrogen atoms.